Yeah, because destroying their most holy relic wouldn't just absolutely piss all of them off, and the murder of tens of thousands of civilians wouldn't piss everybody else in the world at us.
You are missing the point. If you kill every single
brown person Muslim in the world then there won't be anyone left to be mad at USA.
...What's that? You would have to kill millions of people all over the world and even if succesfull this genocide would anger people who aren't even Muslims? Nonsense. These people are pro-genocide when the victims are of different ethnic group or ideology and can't understand why people who aren't from the victim group would get upset. Kinda like when Niam suggested killing the rich and didn't get it why the rest of us didn't think that murder is a good idea even if we don't like some of the victims.
EDIT: Straight from Teh Donald:
Note that the comment on the top is what they posted. That is not something that some media or SJW said, they are literally trying to troll LGBT people by making the rainbow flag a joke symbol of theirs.